出于某种原因,@Value
注释没有被注入到我用作其他测试类的基础的类中。我是 Spring 新手,我对 Java 的了解还不是最好的。我相信这对于有更多经验的人来说会更加明显,但我无法弄清楚。
如果我注释掉该setDbProperties()
方法,则会填充字段,但@Value
仅使用注释,我会在字段中获得空值。
这是我的基本测试类:
package com.blah;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;
import org.dbunit.DBTestCase;
import org.dbunit.PropertiesBasedJdbcDatabaseTester;
import org.dbunit.dataset.IDataSet;
import org.dbunit.dataset.xml.FlatXmlDataSetBuilder;
import org.dbunit.operation.DatabaseOperation;
import org.junit.After;
import org.junit.Before;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {
"classpath:/WEB-INF/application-context.xml",
"classpath:/WEB-INF/application-context-test.xml" })
@ActiveProfiles("test")
public abstract class BaseDbTestCase extends DBTestCase {
@Value("${test.db.connection.url}")
private String connectionUrl;
@Value("${test.db.driver.class}")
private String driverClass;
@Value("${test.db.username}")
private String dbUserName;
@Value("${test.db.password}")
private String dbPassword;
@Value("${test.db.datasource.path}")
private String dataSource;
public BaseDbTestCase(String name) throws IOException {
super(name);
// setDbProperties();
System.setProperty(
PropertiesBasedJdbcDatabaseTester.DBUNIT_DRIVER_CLASS,
driverClass);
System.setProperty(
PropertiesBasedJdbcDatabaseTester.DBUNIT_CONNECTION_URL,
connectionUrl);
System.setProperty(PropertiesBasedJdbcDatabaseTester.DBUNIT_USERNAME,
dbUserName);
System.setProperty(PropertiesBasedJdbcDatabaseTester.DBUNIT_PASSWORD,
dbPassword);
}
@After
public void after() throws Exception {
DatabaseOperation.DELETE_ALL.execute(getConnection(), getDataSet());
}
@Override
protected IDataSet getDataSet() throws Exception {
return new FlatXmlDataSetBuilder()
.build(new FileInputStream(dataSource));
}
private void setDbProperties() throws IOException, FileNotFoundException {
Properties properties = new Properties();
properties.load(new FileInputStream(
"src/main/java/resources/application.properties"));
connectionUrl = properties.getProperty("test.db.connection.url");
driverClass = properties.getProperty("test.db.driver.class");
dbUserName = properties.getProperty("test.db.username");
dbPassword = properties.getProperty("test.db.password");
dataSource = properties.getProperty("test.db.datasource.path");
}
@Override
protected DatabaseOperation getSetUpOperation() throws Exception {
return DatabaseOperation.REFRESH;
}
@Override
protected DatabaseOperation getTearDownOperation() throws Exception {
return DatabaseOperation.NONE;
}
@Before
public void init() throws Exception {
DatabaseOperation.REFRESH.execute(getConnection(), getDataSet());
}
}
如您所见,其他 Spring(和非 Spring)注释在这个类中工作。
我<context:property-placeholder location="classpath:/resources/application.properties" />
在我的应用程序上下文中。
此外,@Value
注释在扩展BaseDbTestCase
类的类中工作正常。
TIA
更新:
在接受@Biju 的建议将系统属性的设置移动到 init() 方法(用 注释@Before
)之后,我现在得到以下堆栈跟踪。基于调试,在抛出错误之前似乎没有通过构造函数。
org.dbunit.assertion.DbAssertionFailedError: driverClass is null
at org.dbunit.assertion.DefaultFailureHandler$DefaultFailureFactory.createFailure(DefaultFailureHandler.java:265)
at org.dbunit.assertion.DefaultFailureHandler.createFailure(DefaultFailureHandler.java:110)
at org.dbunit.assertion.SimpleAssert.fail(SimpleAssert.java:90)
at org.dbunit.assertion.SimpleAssert.assertTrue(SimpleAssert.java:77)
at org.dbunit.assertion.SimpleAssert.assertNotNullNorEmpty(SimpleAssert.java:61)
at org.dbunit.JdbcDatabaseTester.<init>(JdbcDatabaseTester.java:103)
at org.dbunit.PropertiesBasedJdbcDatabaseTester.<init>(PropertiesBasedJdbcDatabaseTester.java:68)
at org.dbunit.DBTestCase.newDatabaseTester(DBTestCase.java:70)
at org.dbunit.DatabaseTestCase.getDatabaseTester(DatabaseTestCase.java:109)
at org.dbunit.DatabaseTestCase.setUp(DatabaseTestCase.java:151)
at junit.framework.TestCase.runBare(TestCase.java:132)
at junit.framework.TestResult$1.protect(TestResult.java:110)
at junit.framework.TestResult.runProtected(TestResult.java:128)
at junit.framework.TestResult.run(TestResult.java:113)
at junit.framework.TestCase.run(TestCase.java:124)
at junit.framework.TestSuite.runTest(TestSuite.java:243)
at junit.framework.TestSuite.run(TestSuite.java:238)
at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)